Electronic cigarette



FIG. 1 is a perspective View of an electronic cigarette;

FIG. 2 is a front View thereof;

FIG. 3 is a rear View thereof;

FIG. 4 is a top View thereof;

FIG. 5 is a bottom View thereof;

FIG. 6 is a right side View thereof; and,

FIG. 7 is a left side View thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the electronic cigarette that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 